News (307)
News
High-throughput RAFT Polymerization via Automated Batch, Increment, and Continuous Flow Platforms
We report an automated strategy to conduct RAFT copolymerizations using a Chemspeed robotic platform capable of executing batch, incremental, and continuous monomer addition workflows under inert conditions. Copolymerizations of oligo(ethylene glycol) acrylate with benzyl acrylate (as a control) and fluorescein o-acrylate were conducted in toluene, THF, and DMF, with reaction progress monitored via ¹H NMR spectroscopy at defined intervals.
Kinetically guided exploration of photocatalytic reactions by combining automation with in situ measurements
Photocatalysis enables valuable reactions such as synthetic transformations or energy conversion processes like water splitting. To rationally improve photocatalytic reactions, mechanistic insights are required. These can be obtained with kinetic measurements, which are, however, difficult to obtain for a large enough number of reaction conditions to provide systematic and valuable insights.
Complementary and Spatially Resolved Operando Spectroscopic Investigation of Pt/Al₂O₃ and Pt/CeO₂ Catalysts during CO/NO Conversion
The composition of reaction mixtures strongly influences the structural evolution and performance of noble metal-based catalysts. In this work, we compared the effect of the simultaneous presence of CO and NO on the noble metal state and CO oxidation activity of Pt/Al2O3 and Pt/CeO2 catalysts under close-to-stoichiometric conditions using complementary in situ/operando X-ray and infrared spectroscopic techniques.
Influence of the CeO₂ Morphology and Initial Pd–Pt Interaction Degree on Catalyst Activity and Stability
Due to its peculiar properties and strong interaction with noble metals, ceria is widely used as a catalyst support for numerous applications. In this work, morphologically pure and highly crystalline ceria nanocubes and nanorods were prepared to systematically investigate both the impact of the support morphology and Pd–Pt interaction degree on the noble metal-support interplay during CO oxidation.
The Implementation and Impact of Chemical High-Throughput Experimentation at AstraZeneca
High-throughput experimentation (HTE) is a critical tool in modern pharmaceutical discovery and development.
Thermo-responsive polymer catalysts for polyester recycling processes: switching from homogeneous catalysis to heterogeneous separations
Inspired by the endless versatility offered by functional polymer materials in terms of modulating and imprinting diverse chemical, physical, and/or biological properties, we developed and screened a family of polymer catalysts, combining highly efficient catalytic functional groups with stimuli-responsive properties, to bring together the advantages of homogeneous catalysis and heterogeneous separation processes in a single catalytic system.
Multi-stimuli-responsive polymers enabled by bio-inspired dynamic equilibria of flavylium chemistry
As part of a complex equilibria network with other chemical species, flavyliums, the chromophoric component of anthocyanins, hold great potential for use in functional polymers.
Role of powders and coatings for relating catalytic activity and structure of Pt in emission control catalysis
Packed powder beds and coatings are two relevant forms of catalysts, applied in industrial heterogeneous catalysis and multiple fundamental studies including operando spectroscopy.
Data-Led Suzuki-Miyaura Reaction Optimization: Development of a Short Course for Postgraduate Synthetic Chemists
A two-day workshop activity is described in which postgraduate students are introduced to (i) the theory and application of Design-of-Experiments (DOE) approaches and (ii) the implementation of affordable automation technologies and related data analysis of a system of catalytic interest.
Showing 10 of 307 news articles